<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Gdata
 * @subpackage Health
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Ccr.php 23775 2011-03-01 17:25:24Z ralph $
 */

/**
 * @see Zend_Gdata_App_Extension_Element
 */
require_once 'Zend/Gdata/App/Extension/Element.php';

/**
 * Concrete class for working with CCR elements.
 *
 * @category   Zend
 * @package    Zend_Gdata
 * @subpackage Health
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Gdata_Health_Extension_Ccr extends Zend_Gdata_App_Extension_Element {
	protected $_rootNamespace = 'ccr';
	protected $_rootElement = 'ContinuityOfCareRecord';
	protected $_ccrDom = null;
	
	/**
	 * Creates a Zend_Gdata_Health_Extension_Ccr entry, representing CCR data
	 *
	 * @param DOMElement $element (optional) DOMElement from which this
	 * object should be constructed.
	 */
	public function __construct($element = null) {
		foreach ( Zend_Gdata_Health::$namespaces as $nsPrefix => $nsUri ) {
			$this->registerNamespace ( $nsPrefix, $nsUri );
		}
	}
	
	/**
	 * Transfers each child and attribute into member variables.
	 * This is called when XML is received over the wire and the data
	 * model needs to be built to represent this XML.
	 *
	 * @param DOMNode $node The DOMNode that represents this object's data
	 */
	public function transferFromDOM($node) {
		$this->_ccrDom = $node;
	}
	
	/**
	 * Retrieves a DOMElement which corresponds to this element and all
	 * child properties.  This is used to build an entry back into a DOM
	 * and eventually XML text for sending to the server upon updates, or
	 * for application storage/persistence.
	 *
	 * @param DOMDocument $doc The DOMDocument used to construct DOMElements
	 * @return DOMElement The DOMElement representing this element and all
	 * child properties.
	 */
	public function getDOM($doc = null, $majorVersion = 1, $minorVersion = null) {
		if ($doc === null) {
			$doc = new DOMDocument ( '1.0', 'utf-8' );
		}
		$domElement = $doc->importNode ( $this->_ccrDom, true );
		return $domElement;
	}
	
	/**
	 * Magic helper that allows drilling down and returning specific elements
	 * in the CCR. For example, to retrieve the users medications
	 * (/ContinuityOfCareRecord/Body/Medications) from the entry's CCR, call
	 * $entry->getCcr()->getMedications().  Similarly, getConditions() would
	 * return extract the user's conditions.
	 *
	 * @param string $name Name of the function to call
	 * @param unknown $args
	 * @return array.<DOMElement> A list of the appropriate CCR data
	 */
	public function __call($name, $args) {
		if (substr ( $name, 0, 3 ) === 'get') {
			$category = substr ( $name, 3 );
			
			switch ($category) {
				case 'Conditions' :
					$category = 'Problems';
					break;
				case 'Allergies' :
					$category = 'Alerts';
					break;
				case 'TestResults' :
				// TestResults is an alias for LabResults
				case 'LabResults' :
					$category = 'Results';
					break;
				default :
			
		// $category is already well formatted
			}
			
			return $this->_ccrDom->getElementsByTagNameNS ( $this->lookupNamespace ( 'ccr' ), $category );
		} else {
			return null;
		}
	}
}
